-er -ic b-p bbb bbc bbe bbi bbp bbr bbs bbt bcb bcc bce bci bcp bcr bcs bct be- beb bec bee bei bep ber bes bet bi- bib bic bie bii bip bir bis bit bpb bpc bpe bpi bpp bpr bps bpt brb bre bri brp brr brs brt bsb bsc bse bsi bsp bsr bss bst btb btc bte bti btp btr bts btt c-- cbb cbc cbe cbi cbp cbr cbs cbt ccb ccc cce cci ccp ccr ccs cct ce- ceb cec cee cei cep cer ces cet ci- cib cic cie cii cip cir cis cit cpb cpc cpe cpi cpp cpr cps cpt crb crc cre cri crp crr crs crt csb csc cse csi csp csr css cst ctb ctc cte cti ctp ctr cts ctt ebb ebc ebe ebi ebp ebr ebs ebt ec- ecb ecc ece eci ecr ecs ect eeb eec eee eep eer ees eet eib eic eie eii eip eir eis eit ep- epb epc epe epi epp epr eps ept erb erc ere eri erp err ers ert es- esb esc ese esi esp esr ess est etb etc ete eti etp etr ets ett ibb ibc ibe ibi ibp ibr ibs ibt icb icc ice ici icp icr ics ict ie- iec iee iei iep ier ies iet iib iic iie iii iip iir iis iit ipb ipc ipe ipi ipp ipr ips ipt ir- irb irc ire iri irp irr irs irt is- isb isc ise isi isp isr iss ist itb itc ite iti itp its itt p-p pbb pbc pbe pbi pbp pbr pbs pbt pcb pcc pce pci pcp pcr pcs pct peb pec pee pei pep per pes pet pib pic pie pii pip pir pis pit ppb ppc ppe ppi ppp ppr pps ppt prb prc pre pri prp prr prs prt ps- psb psc pse psi psp psr pss pst pt- ptb ptc pte pti ptp ptr pts ptt rbb rbc rbe rbi rbp rbr rbs rbt rcb rcc rce rci rcp rcr rcs rct re- reb rec ree rei rep rer res ret rib ric rie rii rip rir ris rit rpb rpc rpe rpi rpp rpr rps rpt rrb rrc rri rrp rrr rrs rrt rsb rsc rse rsi rsp rsr rss rst rtb rtc rte rti rtp rtr rts rtt sbb sbc sbe sbi sbp sbr sbs sbt scb scc sce sci scp scr scs sct se- seb sec see sei sep ser ses set sib sic sie sii sip sir sis sit spb spc spe spi spp spr sps spt sr- srb src sre sri srp srr srs srt ss- ssb ssc sse ssi ssp ssr sss sst stb stc ste sti stp str sts stt tbb tbc tbe tbi tbp tbr tbs tbt tcb tcc tce tci tcp tcr tcs tct te- teb tec tee tei tep ter tes tet tib tic tie tii tip tir tis tit tpb tpc tpe tpi tpp tpr tps tpt trb trc tre tri trp trr trs trt tsb tsc tse tsi tsp tsr tss tst ttb ttc tte tti ttp ttr tts ttt

bbbb bbbs bbci bbeb bbet bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcec bcer bces bcet bcie bcis bcit bcpp bcps bcrs bcsc bcss bctc bcts bebb bebe bebi beci becs beeb beep beer bees beet beic beir beis beit berc bere beri berr bers bert bes- bese bess best betc bete beti bets bett bibb bibe bibi bibs bicc bice bici bics bieb bier bies biet biis bipp bips birb bire biri birr birs birt bis- bisc bise bisp biss bist bitc bite bits bitt bpcp bprc bpti brcb brce breb brec bree brei brep brer bres bret bric brie bris brit brrr brrs brsb brsr brst brtc bsci bscp bscs bseb bsec bsee bser bses bset bsic bspp bspr bssc bsse bsts btbp btcc btcs btec btie btps btrc btrt btss bttb cbbc cbbs cbcc cbce cbcp cbcr cbcs cbct cbec cbee cber cbet cbir cbit cbpc cbpp cbre cbrt cbsc cbse cbsi cbtc ccbc cccb cccc ccci cccp cccs ccee ccic ccii ccip ccir ccis ccpe ccpp ccpr ccps ccrc ccre ccri ccrp ccrs ccrt ccsi ccsp ccss ccst cctb cctc cctt cebp cebs cec- cece ceci cecp cecs cect ceeb ceec cees ceip cepc cepe cepp cepr ceps cept cer- cerc cere ceri cerp cers cert cesc cese cesi cesp cesr cess cest cet- cete ceti cetp cets cibc cibe cibi cicc cici cicr cics cict ciee cier cies ciii ciis ciit cipp cips cirb circ cire ciri cirr cirs cirt cis- cisc cise cisp cisr ciss cist citb cite citi citp cits citt cpbc cpce cpcs cpeb cpep cper cpic cpps cpre cpri cprs cprt cpsc cpsr cptp cptr cpts crbc crcc crce crcr cre- creb crec cree crei crep cres cret crib cric crie crip cris crit crpc crps crrt crsp crss crst crtc crtp crts cscb cscc csce csci cscr cscs csec csee csep cser cset csib csir csis csit cspb cspc cspe cspi csps cspt csrc csrs csse cssr cstc cstr csts ctbi ctbs ctcp ctec ctep ctic ctpp ctps ctrc ctrp ctrs ctsc ctss ctts ebbc ebbr ebbs ebcc eber ebes ebic ebis ebit ecbc ecbe eccb eccc ecce ecci ecct eces ecib ecip ecis ecit ecpp ecrc ecri ecrr ecsc ecse ecsp ecss ect- ectc ects eecs eeee eees eeps eerc eers eese eesi eetc eete eets eics eiec eiei eier eies eipr eire eirs eise eiss eist eitb eitc eiti eitr epcc epci epec epee eper epes epi- epic epie epip epis epit eppc eppp epps eprb eprp eprs epsc epsi epsp epss epte erbb erbe ercc erce ercp ereb erec erei erer eres eret eric erie eris erit erpe erps errc erre errs erse ersi erst erts esbs escb esce esci escr escs esee eser eses eset esie esis esit espc espe espi espp esps esri esse essi essp